Osteology of the Hand Flashcards
Bones of the wrist that connect the distal aspects of the radial and ulnar bones to the forearm.
Carpal Bones
How many carpal bones are there in the wrist?
8
Bones located between the phalanges of the fingers and the carpal bones.
Metacarpals
How many metacarpals are there in the hand?
5
A group of small bones that comprise the bony core of the digits of the hand.
Phalanges
How many phalanges are there in the digits of the hand?
14
How many bones are there in the hand, not including sesamoid bones?
27
How are the carpal bones of the wrist arranged?
2 Rows of 4 Bones Each (Proximal & Distal)
What is the order of carpal bones from lateral to medial in the proximal row?
Scaphoid, Lunate, Triquetrum, Pisiform
A carpal bone located just distal to the styloid process of the radius. It is boat-shaped and has a tubercle. It is most commonly _________ because it hits the ground first and isn’t protected by a tendon.
Scaphoid (aka. Navicular) Bone
Fractured
A carpal bone located in the middle of the posterior wrist and is moon-shaped. It is most commonly __________ because of the force being applied on either side, which causes it to shift out of place.
Lunate
Dislocated
A carpal bone that is pyramid-shaped and located just distal to the head of the ulna. Majority can be felt on the posterior wrist.
Triquetrum
A carpal bone located on the anterior surface of the triquetrum and is easily palpable. It is pea-shaped and completely surrounded by tendon, which makes it a sesamoid bone.
Pisiform
What is the order of carpal bones from lateral to medial in the distal row?
Trapezium, Trapezoid, Capitate, Hamate
A carpal bone associated with the base of the first metacarpal and has a tubercle.
Trapezium
